diff --git a/packages/codemode/src/token.ts b/packages/codemode/src/token.ts
deleted file mode 100644
index 1e06bec1e4..0000000000
--- a/packages/codemode/src/token.ts
+++ /dev/null
@@ -1,10 +0,0 @@
-/**
- * Token estimation for budgeting model-facing text. Copied from
- * `@opencode-ai/core/util/token` (chars / 4) so this package stays
- * dependency-free; keep the two in sync if the heuristic ever changes.
- */
-export * as Token from "./token.js"
-
-const CHARS_PER_TOKEN = 4
-
-export const estimate = (input: string) => Math.max(0, Math.round(input.length / CHARS_PER_TOKEN))
diff --git a/packages/codemode/src/tool-runtime.ts b/packages/codemode/src/tool-runtime.ts
index 9d0c1ea4bd..0135a2ae8f 100644
--- a/packages/codemode/src/tool-runtime.ts
+++ b/packages/codemode/src/tool-runtime.ts
@@ -10,9 +10,10 @@ import {
   outputTypeScript,
   type Definition,
 } from "./tool.js"
-import { estimate } from "./token.js"
 import { SandboxDate, SandboxMap, SandboxPromise, SandboxRegExp, SandboxSet } from "./values.js"
 
+const estimateTokens = (input: string) => Math.max(0, Math.round(input.length / 4))
+
 export type HostTool<R = never> = (...args: Array<unknown>) => Effect.Effect<unknown, unknown, R>
 
 export type HostTools<R = never> = {
@@ -438,7 +439,7 @@ export const discoveryPlan = <R>(
     picked: new Set<ToolDescription>(),
     queue: [...group].sort(
       (left, right) =>
-        estimate(catalogLine(left)) - estimate(catalogLine(right)) || left.path.localeCompare(right.path),
+        estimateTokens(catalogLine(left)) - estimateTokens(catalogLine(right)) || left.path.localeCompare(right.path),
     ),
   }))
   let used = 0
@@ -447,7 +448,7 @@ export const discoveryPlan = <R>(
     const stillActive: typeof active = []
     for (const selection of active) {
       const tool = selection.queue[0]!
-      const cost = estimate(catalogLine(tool))
+      const cost = estimateTokens(catalogLine(tool))
       if (used + cost > maxInlineCatalogTokens) continue
       selection.queue.shift()
       selection.picked.add(tool)